Powder puff sewing machine



June 9, 1931.

R. BIHLEFZ POWDER PUFF SEWING MACHINE Filed Aug. 12, 1926 s She'ets-Sheet 1 INVENTOR Roger Bihler A ORNEYS June 9, 1931. 1,808,805

- POWDER PUFF SEWING MACHINE Filed Aug. 12, 1926 3 Sheets-Sheet 2INVENTOR Roger Bihgr I BY @M/X ATTORN EYS June 9, 1931. R. BIHLER 71,308,305

POWDER PUFF SEWING MACHINE Filed Aug. 12, 1926 3 Sheets-Sheet 3 INVENTOR-&

4 b ATTORNEYS as they are fed to the machine needle in a manner toprevent any relative-movement,

Patented June 9, 1931' UNI ED S A ES TEMP-OFFICE;

noenn. BIHIEZR, or coma-en POINT; NEW YORK, n .Y., Assienon,BYMEsnnAssiGir MENTS To nAnonnr -nonnn 00. me, or coLLEGnPo irr, newYORK, A oonrona- TION OF NEW YORK rowDER PUFF SEWING MACKINE Applicationfiled August 12,1926. Serial No. 128,885.

This invention relates to a machine forv sewing circular multi-plyarticles such as powderpuffs, and the prime desideratumbf the inventioncomprehends the provision of improvements for operating the machine toproduce powdercpuffs of high-grade quality and of uniformcharacteristics on a quantity production scale. q f Oneoftheprincipal'objects of the ;inven-. tion in carrying out this primedesideratum centers about the provision of an improved workfeedingmechanism .designed and constructed for clasping and holdingtogether the multiple plies forming the embryo powderpufi' assembly, andfor feeding thesame to be sewed or stitched together in a manner toproduceia resulting powderpufi' having theplies united togetherattheirrims to form a uniformly flat and unrufiled pouch and in a mannerto prevent any injury toand to maintain the integrity ,ofthe nap ofithepowder puff.- i T As is well known,.powder pufis are manufactured byassembling in. superposed relation nap to nap two plies of a powderpuff. 'inaterial cut to circular ,configuratlon and sewing the plies attheir, circumferential edges or rims a. distancesomewhat less than theentire rim circumference, leaving an opening through which the embryopouch formed is turned insideout, afterwhich the pouch so formed isfilled and sewed by hand at the aforesaid opening. To produce pow-, derpufi' pouches of neat appearance and uniform characteristics withoutinjuring the delicate fabric or nap of the powder pufi, it-zis desirableto feed the multi-ply powderepufi',

assembly to the machine for sewing the rims thereof by holding themultiple plies together:

or slippage therebetween, such slippage producing a resulting powderpuff having a twisted, non-fiat'and unsightly appearance; and it isfurther desirable in holding such plies together to prevent relativeslippage therebetween to minimize anysuch pressure.

on the material that would tend to flatten or injure the nap of themateriaL: To accomv'ention contemplates the provision of an improvedwork feeding ,device if embodying a means for holding together the pliesof the work assembly witha predetermined and uniform pressure 'whichmaybe adjusted to suit the character'of the fabric employed and for feedingthework assembly to the machine so form and-consistent results inthemaking-ofj the powder -pufi' .by -.quantity production methods, suchobjectjbeing accomplished by the provision ofm'eans for maintaininguniform; the predetermined pressure exerted on 1 the multi-ply assemblyduring feeding there-.

of, by the provision o f ffurther means.-forautomatically releasing thispressure, at" a predetermined point in the operationfofthe machine so asto permit quick releasingof the work from the machine, by the provisionof further means for automatically releasing. the thread tensioningmeans of thefmachine when the work is released to permit with drawalofth'e work assembly and replacement thereof by a newembryoassemblywithout time lag, and by the 'provisionfof vmeans forautomatically stoppingthe operations of the machine when thepredetermined circumferential amount ofthemulti-ply assembly has beensewed'or'stitched byv the machine. 1 v v To increase. the output orspeedof opera it tlOIl' of the machine, the invention further 1 jcontemplates the provisionof a work holding device constructed anddesigned to permit the operator to assemblethereon-new work to be fed.to the; machine Twhile the machine is operating upon workalready fedthereto, and

so as to permit the. quick substitution tothe desideratum; of theinvention 'comprehends the provision of a-work holding device associatedwith the workfeeding apparatus so as to permitthe obtaining of uniformandcon sistent results with the machine operatingat a high output rate.a v

A further principal obJect of the invention' resides "in the provisionof improved means for intermittently feeding the Work. assemblyinjrelation to the machine needle;

and the further provision of such naeans which may be readily adjustablyby--the operator to predetermine'the portion of the circumference of thework assembly to be stitched or sewed and to determine this in relationto the different diameters. of-powderpuffs operated upon by the machine;and the still further provisionof mechanism whicl i,

an unskilled operative may readily adjust to A adapt themachineforpowderi puffs of different diameters and different thicknesses andquality of material.

still further object of" the invent-1011 centersaboutthe provision of amachine of r the character referred toin which all theparts'arebrganized' in accordance with simple laws of operation toaccomplishthe' mani fold objects ofthe inventionin a simple manner.--,7' v To the accomplishment of the foregoing and such o'tlienobjects ofthe invention as Willhereinafter appear, my invention consists' in the"elements and their relationoneto the other. as hereinafter moreparticularly described and sought'to be defined in -the 1 claims;reference jbeing had-to the accompanying drawings which show thepreferred embodiment of myinvention, andin which Fig. 1 is a frontelevational 'view'of the machine with parts broken away and other partsshown in section,

- chine,

V Fig. 2is a fragmentary View thereof taken in cross-section inthe'plane ofthe line 2-2, Fig.1"; 5 j 7 Fig. 3. is-a viewtakenincross-section in the plane of the'line 3-3, Fig-2,

Fig. 4 is an end'elevat'on'al view of-the maisa View taken incross-section in the plane of the'line 5'5, Fig. 1

in thepla ne of the line 66, Fig. 5,v V Fig. is a perspective viewofapowder Fig. 6 is a plan view 'ta'kerrin cross-section puff pouchproduced by the operation of the machine, L I V a Fig; 8-is a planflviewof part 'of-the work .hol'ding means in the machineQand i Fig. 9 is afragmentary view of a. deta l;

taken in Crossfsectionin'the plane ofthe line 9+9, Fig.8.

j Before describing the ma'chine embodying the principles ofmy invention'in detaihI m'ayfirst'briefiy explain byreference to Fig.

1 of the drawingsthat in the operation of the machine the Work W in theform'of'superposed plies 'of mat'erial'is fed to the machine bya wvorkfeeding means generallydesignated as Which receives the work'from a Work"holder B manipulated by theoperat0r,-' the said Work feeding means Abeing constructed and designed to holdunder uniform pressure Workassembly and to feed .the circumferential edges thereof into stitchingrelation withthe machine needle, the said work feeding means A beingintermittently-operated by a stitclrproducing" mechanism C operated fromthe drivemechanism D of the machine.

.The pressure maintained on the Work W-by the Work feeding means A isuniformly produced by-a-cam operated mechanism E con nected to the workfeeding means A, and the said-cam operatedjmechanism E is designed themultiple plies of material forming the v ment' thereof by a" new embryoassembly, I

the'invention furbher comprehends a thread tension" releasing mechanismGr Which is automatically operated to "release the tension on the threadWhenthe'opera'tion of the ma} chine is trippedand "the'pre'slsur'eeffective on the "work is. re'leaseid; andfto return the partsto'fo'perating' coiidit'ion there is provided treadle or-[other manualloperated means generallydesignated for: returning the operatingmechan'ism D and the Work'feedill-g 11163.113 f0 tll; pfaltihgshowndn-Fig; 11ofthe drawin s:

The work;feeding means A comprises in the preferred constructionarotatable stitchpositions roducing or formi gwork table -10 which V begradially sermtedas typically hown in gFigs'f Lands of ,the drawingss'othat the work' re'ceived' by the work table may' be effectuallygripped there'by, and cooperating Withi th'e work 'table- IO -there isprovided a freely rota-table pressure plate 11 movable into andout ofengagement Withthe multiple work assembly held 'or clasped between fthevjvork table' and the' pressureplate, the 1 'diametrical dimensions ofboth Work table an'dpres'sure plate being' such that the circunrfer'entialedges 'orfi rim of the work assembly 7 W isaeXposed to 5permit" such; edges to be by a'rr'angin'g' superposed relation nap tonap t wo plies of the" powder puff material cut? to circularconfiguration, the assembly being centeredf with-respect. to the vworktable and cooperating. pressureiplate. :"Y'I he, work table. 10 is:mounted for intermittent rotation in .a. supporting'p'late 12 securedtothe bottom :plate '13 .of the machine stitched; to' geltherfin theoperation of the r I machine. As shownitypically in Fig. 5 of thedrawings, 1 the gworkj assembly is formed head, the. saidsupportinguplate 12 being vslidablein the bottom :plate .13 for thepurpose of adjusting the position of the work table relat-ive'to themachine needle 14 to accommodate the machine to powder puffs ofdifferent diameters, the said slide plate 12 being'secured in adjustedpositionby means of the screws 15,15 which are threadedly received bytapped bores in the bottom plate 13 and which are received by elongatedslots 16, 16 in the slide plate 12 permitting the desired adjustment ofthe latter. 1

The pressure plate 11 is mounted rotation on a screw stud 17 which isthreadedly attached to an arm 18 movable between elevated and descendedpositions by means of a pressure plate lifting bar 19 reciprocable inthe head 20 of the machine, the said arm 18 being adjustably connectedto a bracket 21 by means of the screw 22 secured to the arm andadjustably receivable in an elongated slot 23 in the bracket, the saidbracket being in turn attached to the lifting bar 19 by means ofthesecuring device 24. The adjustment of the pressure plate 11 afforded bythe screw and slot adjustment means 22' 23 is provided for adjusting thepressure plate in correspondence with the'predetermined adjustment ofthe work table and its slide support to suit or accommodate thedifferent dimensions of powder puffs to be operated upon. As will bepointed outmore in detail hereinafter, the pressure exerted on thepressure plate 11 may be predetermined and is made such asto effectivelyclamp or hold the plies of thematerial to-' Y gether without breaking orinjuring the delicate nap of'the work material and in a manner to permitfeeding of the material with: out permitting relative slippage betweenthe plies of theassembly; and by means of the construction described, itwill be evident that the intermittent rotation imparted to the worktable 10 effects the rotation of the pressure plate 11 and theintermittent feeding of the work held therebetween.

The intermittent operations of the work table 10 are produced byintermittently operating a drive shaft 25 journalled longitudinally inthe machine, the work table 10 being connected to the drive shaft 25 bya train of gears comprising, a spur gear 26 keyed to a shaft 27, towhich shaft the turntable 10 is fixed, the said spur gear meshing with agear 28 fixed to a sleeve 29 which in turn revolves on a stud 30, thesaid sleeve 29 having fixed thereto a spiral gear131meshing with aspiral gear 32 which in turn is loosely keyed as at 33 to the driveshaft 25; This gear system is supported and carried by the slide plate12, part of the same being held by a 5 gear housing 34 attached to theslidep'late 12 by screws 35, 35, the construction being such that thegear system is movable with V the adjustment of the slide plate 12, thegearing connection being maintained by the loose key 33. The spiral gear32 is held between for free the slide plate;

opposed abutments 36 formed with the slide plate 12 so as to partake ofthemovement of The work holding means B comprises a turntable devicemanipulated by the "opera- 'tive for presenting the assembled plies of Imaterial to the work feeding means A, the

said work holding means being constructed and designed to permit theoperator to assemble thereon new workto be'fed to the ma-' chine whilethe machine is operating on work already fed thereto and soa-s' topermit the quick substitution to the machine of the work assembly forthe finished work. This turntable comprises in the preferred construc- 7tion a hub 37 rotatable about astud shaft 38 as an axis, the latterbeing adjustably secured within a longitudinal slot in a supporting arm39 extending from and preferably integral with the bed 40 ofthe machine,this adjustment being'kept commensurate with the adjustment of table 10on plate 12, and to the hub 37 are secured a plurality, such for exampleas four, work holding elements 41, 41 each adapted for receivingassembled plies of material and each movable by turntable rotation toposition the work assembly on the work table 10, as will be clearly apparent from a consideration of Figs. 1,5

and 6 of the drawings.

Each ofthe work" olding elements '41 comprises a receptaclehaving a worksup porting rim 41a and a central opening 416 movable over and intoregistry with thework table 10 to position the assembly thereon; andeach of said receptacles is provided with a radial arm 42 secured bymeans'of the screws 43 to seat portions 44 provided in the turn tablehub 37. Desirably as shown in F igs.

8 and 9 of the drawings, each of the receptacles is provided with workcentering elements 416, 41e which are eccentrically mounted in theperipheral wall of the receptacle,

diameter of the receptacle to accommodate and center work of varyingdiametrical dithe said centering elements being adjustable. by rotationto vary the effective holding mensions. Where the turntable is providedwith four work holding devices, it will be stitution of a new workassembly for the .understood that a quarter'of a revolution im- ":1parted to the turntable will eifect the subwork finished by the machine;and to center the workon the work table, the turntable 37 is providedwith a centering means consisting of a resilient finger 45 fixed to thearm 39 and mating with notches 46'provided in the turntable hub 37 (seeFig. 1).

With the construction thusfar described,

will be apparent that after the work WV is centered relative to the worktable 10 by manip ulation of the turntable B, the pressure plate 11 maybe moved to descended position to effect the gripping of the work Wbetween thepressu're plate 11 and the work'table 10,

. the exposed rim orcircumferential edges of the Work being supported bythe rim tl-la the Work holding receptacle 41, Which latter sentingtherim of the Work is held stationary during the intermittentstitch-forming operation of the- WOIk table. For-the purposeof guidingand-neatly pre: assembly to the machine needle, I prefer to sure andguide means in'the foimofa-pres:

sure .foot i? secured means of the screw 24 to the lifting bar l9,-thesaid pressurefoot 47 being upturned at its advance endAS for guiding thework material into operated-po- V sition. ,Thelvvork holding receptacle.41 is With the intermittent-stitch-producing.

provided with an orifice or notch-Md With 'whiclii registers anotcht4l7a provided in the pressure. foot 4C7 ,.,both, for clearingthemachine needle llpthe coustructionbeing such that the multipleplieswofvthematerial as they are fed between the rim of the Work holdingreceptacle andthepressure foot are com-' pact-ed to therequiredondesire-d degree, such compacting being localized atthe machine &pressure exerted on thejvvork'r'nay be prede:

terinined to a degree top-revent orinhibit the breaking or injuringofthe napofthe fabric and becausethe multiple plies are fed infia mannerto prevent anyrelati've movementor.

slippage between the plies of the Workoassemblyqi f a. oThe'manipulation of the turntable B by the operative permits the-outputof the machine to be increased,since the operative may a semble theWork-on one of the receptacles 41 While the other receptacle; is inmachine operatingposition and in order to permit [the quicksubstitutionto the machine of the new assembly for the finished Work, I providethemeans G heretofore referred to, for releasing the thread tensioningfmeans When the V pressureon the Work assembly-V 1s releasedau'tomatically by means to be described herein after, This means G forreleasing-the thread tonsioning means comprises a Wedge-shaped element49 attachedby meansiof a. screw 50 to the bracketQLthe said Wedge49%[being adapted tomove between the jaws of the thread tensioning means'51 When the lifting rod 19 is elevated to in turnelevate the pressurevplate 11; By mcansoftlns construction the turntable B may begivenaquiclr quarter-turn,the released thread permitting a quick operationbringing the new W01; assembly:1n centered posit on atthe work providea: prestable and permitting thereafter the discharge" or removal of thecompleted work or embryo-f formed pouch from the Work holdingturntableB, 1 1

The \vork feeding mama is, as aforesaid, intermittently operatedbythejstitc-h producing mechanism C Which comprises clutch meansvconnecting a continuously rotated sh aftf52 with the shaft 25 tobei11t6 1111ltt8t}t ly driven, the said mechanism G embodying, furthermeans for converting the rotary motion of shaft 52to an intermittentmotion of: shaft 25, which latter means is constructed so as to bereadily adjust'able by an unskilled operator. to vary the length ofstitch pro-- duced by the mechanism C. r o .Theclutch of the mechanismcomprises a-clutch body,.53 fixed to anextension 25'. of the shaft 25,wvith Which clutchbody co-, operates a pair of clutch feed dogs 54-, 54

received by slot 55, 55 provided ina rocker" arm 56 'oscillatablymovable on ,the'shaft '25,

the said clutchz-dogsbl, 5e being-provided with gripfingers 54L-whichco-act With the rim 53 of the clutch-body 53 to impart intermittentmotion to the clutchbody henthe rocker arm 56' is" oscillated or rockedabout its pivot shaft 25,"this being'accomplished by the slight,eccentric positioning of the feed dogs 54, 54 relative to the riin ofthe clutch body and by the oscillating action imparted tothe feed dogswhich results in, the

rim 'offthe clutch body being alternately gripped-"and released duringthe oscillation oftherockarin 56. The clutch body+53 is also preferablyprovided with a cover plate-57.

For iconvertingthe rotation 'of shaft 52 into oscillation ofI-the clutchdriving rocker 56, there is provided a ball eccentric 58mtating 'Withinthe ball eccentric strap 59, which latter is connected to a connectingrod 60 threadedly adjustable as at 61 inthe sleeve extension 59 oftheeccentric strap ;*andthe said connecting rod 60 isswivelly attachedby the wrist pin '62 'to'a connecting'link 63, Which latter can rotatehorizontally about a"stud '64' or vertically about a stud 65, the stud:165 being mounted in the rear end'of thestud 64, thepartsbeing-'securedtogether by securing nuts 66, 66 which are threaded'lyreceived by the, studs, the: construction being such that the:connectingrod '60 .is fat tachedto .the' v rock arm 56in away topermituniversal relative movement between the same, the said rod being in turnattached to the shaft 52 to permituniversal move ment between the same;Y For adjusting or varying the length, of the stitch, the stud 65, ismade adjustable; in the rock. arm 56,6and toithisend the-f said stud isadjustably received by'the elongated slot 6'7provided in the -rocker armhfigzand it vwill beapparent that'adjustinent ofthe studin the rockerarm Will vary the arcuaterthroiv of the,rockerv arm and hence vary thedegree of movement imparted to the work feeding device A for eachoscillation of the rocker arm. The clutch operating shaft 52 isjournalled at its top in a bracket arm 68 fixed to the head 20 of themachine and at its bottom in a journal plate 69 provided with the thrustplate 7 O which engages the thrust collar .71 fixed to the shaft 52, thesaid shaft deriving motion from a continuously rotated shaft 22 arrangedhorizontally in the head 20 of the machine by means of the bevel gears73.

The drive mechanism D for operating the parts of the machine comprisesthe conventional means for driving the horizontal shaft 72 whichincludes a pulley 74 fixed to the shaft and a pulley 75 idle thereon,the said pulley 74 bein driven by means of a belt 76 receiving motionfrom any suitable source of power (not shown), the said belt 76 beingshiftable onto the idler 75 when it is desired to stop the operation ofthe machine parts. The means for shifting the belt 75 may comprise ayoke member 77' embracing part of the strap 76, the said yoke memberbeing attached to one end of a shift lever 7 8 fulcrumed as at 7 9, thesaid shift lever being normally held in the position shown in Figs.

1 and 1 of the drawings by means of a latch member 80 pivoted on thescrew stud 81, the

said latch being provided with a latch finger 82 engaging the upper endof the shift lever 7 8 and holding the same against the tension of aleaf spring 83. With this construction it will be apparent that normallythe shift lever 78 is h eld in the position shown to drive the machineparts, and that when the latch lever 89 is tripped, the shift lever78will be released and will be shifted by force ofthe spring 83 to moveor shift the belt 7 6 onto the idler 75.

As heretofore mentioned, a desired object of the invention centers aboutthe provision of means for maintaining the pressure on the pressureplate 11 constant during the operation of the machine, and to this endthe cam means E heretofore referred to is provided. This cam means Ecomprises a cam wheel 84: which is connectedto the shaft 72 to berotated in the direction of the arrow shown in Fig. 1, the cam beingconnected to the shaft by means of a gear 85 fixed to the cam shaftmeshing with a worm gear 86 fixed to the shaft 7 2, said cam meansfurther including a camfollower 87 which engages and rides underpressure over the rim of the cam wheel 84, the said. cam follower beingjournalled in a holder 88 fixed to a lever 89, the latter beingfulcrumed at 90 on the machine head.

20, the said lever being provided at its advance end 91 with a fingerheld between a pair of collars 92 fixed to the lifting bar 19 so thatmovement of the lever 89 about its fulcrum operates the lifting'bar 19.In the operation of the machine the riding of the cam follower 87 on thecam wheel 84 causes a bly is stitched by the machine a predetermineddistance about its circumference, and as shown for example in Fig. 7 ofthe drawings, the stitching is predetermined so as to leave an openingo'in the powder puff pouch through which the powder puff may be turnedinside out to be. filled and finished. To predeterminethe portion of thecircumference to be sewed, I provide means for automati cally stoppingthe operation of the machine when the desired point is reached, and suchmeansheretofore designatedas F. comprises a trip device 94 preferablyattached to the cam wheel 84, which trip device cooperates with thebevel end 80 of the latch 80 to trip the said latch when the cam wheel84 reaches a predetermined point in its travel, the tripping of thelatch resulting in shifting the belt 1 76 and stopping the operation ofthe machine.

As heretofore pointed out, when the oper-' ation of the machine isautomatically stopped the pressure exerted on the work assembly isreleased and the pressure plate 11 elevated,

permitting the withdrawal of'the work from the machine; and toaccomplish these results the cam means E is constructed so that when themachine is stopped the pressure plate 11 is automatically elevated. Thisis accomplis'hed by providing a notch 95 in the'cam 1'05 7 wheel 84which is adapted to mate with and receive the cam follower 87 to permitactua tion of the lever 89 to elevate the pressure plate. The lever 89is actuated at such time by its weight combined with the action of a 89by means of theconnecting link 98." I

returning the lever 97 to the position shown spring 96 anchored so astoexert its force on:

an operating lever 97 connected to the lever in Fig. 1 of the drawingsand by returning 7 the shift lever .78 to its normal operating positionby means heretofore referredto as the operatingmeans H, which comprisespulley chains or equivalent apparatus 99 at-.

tached to a pedal (not shown )so that when the pedal is operated themotion will be transmitted by the chains 99 to the rear end 97 of thelever97 and to a belLcrank lever lOO ful crumedin the machine, whichbell crank. lever is provided with an arm 100 engaging-the shift lever78 to return the same to the position shown typically in Figs. 1 and 4of the explained, the operating lever 97 is also latched in the positionshown in the drawings, this being effected by means of a latchdrawingsto be latched in such position by thelatch device 80.

Preferably and for the reasons now to be lever 101 fulcrumed on themachine on the screw stud 102, the upper end of the lever having a latchfinger 101 engaginga tooth 103 provided in the lever 97 (see Figs. 1 and4:) The latch lever 101 is normally held in its latching position bymeans of a spring 104. The latching of the lever 97 permits the treadletobe released while the elevated cam fol1ower87 is still over the camwheel notch 95 and prior to the pressure engagement of the cam wheel rimwith the cam follower 87, and also prevents descending movement of thecamfollower'87'into the notch 95 until the ful-lno'tch is beneath thecam follower, at

which time the operation of the machine is predeterminedly stopped. Itwill be evident that this permitsthepressure to be maintained on thework until the point of stopping the machine, and prevents the pressureat the terminal portion of the workfrom being grad ually released andvaried.

The latching of the lever 97 as described necessitates the releasing ofthe latch when the machine is stopped and this is effected bythe'provision of a latch trip arm 105 fixed to the lower arm of theshift lever 7 8 and partaking of the movement thereof, the advance end105 of the latch trip arm 105 being adaptedto engage a finger'106 fixedto t e latch lever 101 so as to operate the latch lever 101 to theunlatching position permitting the pressure plate elevating operation ofthe cam means E. a

The use and operation of the machine will in the main be fully apparentfrom the above detailed description of the mechanism and sequence ofoperations thereof. It will be further apparent that while I have shownand described my invention in the preferred form, that many changes andmodifications may be made in the structure disclosed without departingfrom the spirit of the invention, defined-in the following claims.

I claim:

1. In a machine for sewing circular multiply articles, a machineheadhaving a pair of forwardly projecting arms, a rotatable workfeeding worktable for receiving assembled plies of material and for stitch-feedingthe same to the machine needle, a plate subjacent said Work table forsupporting the same and mounted forlongitudinal adjustment along thelower arm of said machine head, a pressure plate movable intoand" out ofengage mentwith the, multi-ply assembly for holding thelplies'of'material together and in eni ga'gement'with the work table to'berotated thereby, means for adj ustably supporting said pressure plate onsaid machine head, and

means for intermittently operating the work table in unison with thestitching operations of the needle. e e v I 2. In a machine for sewingcircular mult1-' ply articles, a'machine head including an operatingshaft, a rotatable work-feeding work table for receiving assembled pliesof material and for stitch-feeding thesame' to' the machine needle, asupporting plate for said work table slidably mounted for adjustment onsaid machine head, gearing sup ported on said plate and connecting thework table with said operating shaft, a pressure: plate movable into andout of engagement with the multi-ply assembly for holding the plies ofmaterial together and in engagement with the work table to be rotatedthereby, and

gearing supported on said plate and connecting the Work table with theoperating shaft to permit of adjustments of said plate, and means forintermittently operating the shaft to actuate the work table in unisonwith the stitching operations of the needle.

4:. In a machine for sewlng'circular multiply articles, a machine headincluding an operating shaft, a rotatable work-feeding,

work table for receiving a plurality. of plies of material assembled tobe sewed together and for feeding the same to themachine needle, meansfor adjustably supporting the work table on the machine head, means connecting the work table with said operating 7 shaft while permitting ofsaid adjustment,

and'means for intermittently operating the shaft to actuate the worktable in unison with I the stitching operations of the needle;

5. In a machine for sewing circular multi ply articles, a rotatable worktable, a work holder for receiving assembled plies of mate rial, saidWork holder beingmovable to posi' tion the assembly on the work tableand for holding the same so position-ed, a pressure plate movable intoand out of engagement with the multi-ply assembly for holding the pliesof material together and in engagement with the work table to be rotatedthereby, and

means for intermittently operating the work table to effect theoperation thereof.

6. In a machine'for sewing circular multiply articlesfa rotatableworktable, a work holder for receiving assembled plies of material, saidwork holderand support having an opening in its bottom movable over andin: i t

registry with the work table to position the assembly thereon, apressure plate movable into and out of engagement with the multi-- plyassembly for holding the plies ofma-terial together and in engagementwith the work table to be rotated thereby, the said pressure plate beingmovable to permit the work holder to be moved betweenthe work table andthe pressure plate, and means for intermittently operating the worktable to effect the operation thereof. I

7; In a machine for sewing-circular multi plyarticles, a work-feedingmeans including a rotatable feeding mechanism, a work holder forreceiving assembled'plies of material,

- said work holder being movable to position.

the assembly in relation to the work feeding means and for holding thesame so positioned, and a pressure plate movable into andout ofengagement with the multi-ply assembly for holding the plies of materialtogether and'in engagement with the rotatable feeding mechanism to berotated thereby. V

8. In a machine for sewing circular multiply articles, a rotatableworktable, a work holder for receiving assembled plies of material, saidwork holder having a work-supporting rim and a central opening movableover and into registry with the Work table to position the assemblythereon, a pressure plate movable'into and out of engagement with themulti-ply assembly for holding the plies of material together and inengagement with the work table to be rotated thereby, said pressureplate having dimensions to expose the rim of the assembly to the machineneedle, and means for intermittently operating the work table tothereof.

' 9. In a machine for sewing circular multiply articles, a rotatablework table, a work holder for receiving assembled plies of material,said work holder having a work supporting rim and a central openingmovable over and into registry with the work table to i position theassembly thereon, a pressure plateinovable into and out of engagementwith the multi-ply assembly for holding the plies of material togetherand in engagement with the work table to be rotated thereby, saidpressure plate having dimensions to expose the rim of the assembly tothe machine needle, a' work guide element located above the supportingrim of the workholder for guiding the rim ofthe multi-ply assembly,-andmeans for intermittently operating the work table to effect theoperation thereof, j 10. In a machine for sewing circular multiplyarticles, a rotatable work table, a turntable having a plurality of workholding ele ments each adapted for receiving assem: bled plies ofmaterial and each movable by turntable rotationto positionthe assemblyon the work table, a pressure plate movable into and out ofengagementwith the so-positioned multi-ply assembly'for holding the effect theoperation plies of material together and in engagement with the worktable to be rotated thereby,and meansfor intermittently operating thework table to effect the operation thereof.

11.- In a machine for sewing circular multi- 'ply articles, a rotatablework table, a turnintermittently operating the work table to effect thestitch-feed operation thereof.

12. In a machine for sewing circular multiply articles, a work-feedingmeans including a rotatable feeding mechanism, a turntable having apluralityof work holding elements 3 each adapted for receivingassembled'plies of material and each movable to position the assembly inrelation to the work feeding means, and a pressure plate movable intoand out of engagement with the soj-positioned multi-ply assembly forholding the plies of material together and in engagement with, the

rotatable feeding mechanism to be rotated thereby. i

13. In a machine for sewing circularmulti-' ply articles, a rotatablework table, a turntable having a plurality of work holding elements eachadapted for receivin' assembled plies of material and each mova le byturntable rotation to position the assembly on the work table, each ofsaid work holding elements comprising a support provided with a centralopening for registry with the work table and provided with an orificefor registry with the machine needle, a pressure plate movable into andout of engagement with the so-positioned multi-ply assembly for holdingthe plies of material together and in engagement with the work table tobe rotated thereby, and'means for intermittently operating the worktable to effect the operation thereof. V i

14. In a machine for sewing circular multi-ply' articles, a rotatablework table, a turn-- table having a plurality of work holding elementseach adapted for receiving assembled plies of material and each movablebyturntable rotation to position theassembly onjthe work table, apressure plate movable into and outfof engagement with the so-positioned'multi-ply assembly for holding the plies of material together and inengagement with the work table to be rotated thereby,

the pressure plate being movable a distance to clear the turntable andto permit move ment'of -the workholding elements between work table andpressure plate, and means for intermittently operatingthe, work table toeffect the operation-thereof. .1". In a "machine for. sewing circularmulti-ply; articles, a Cwork feeding means including a rotatable feedingmechanism, aiworkholder for receiving assembled plies of material, saidwork holder being movable into, and out of relation with said workfeeding means to, position the, assembly on the rotatable feedingmechanism, a pressure platemovableiinto and out of engagement with themulti ply assembly for holding the plies of material together and inengagement with the rotatable feeding mechanism, a thread tensioningmeans and means for releasingthe, thread tensioning meanswhen saidpressure plate is moved out of engagement with the assembly. i V r 16.In a machine for sewing circular 'multi-ply articles, a rotatable worktable for receiving assembled plies of material, a ro-s tatablepressurejplate movable into and out of engagement with the multi-plyassembly for holding the plies of material together and in engagementwith the rotatable work table, a thread tensioningmeans, and meansoperated inresponseto inovement of the rotatable pressure plate forreleasing the thread tensioningineans when said pressure plate is movedoutof engagement with the assembly.

- :17 @[In a machine for sewing-circular multi-ply articles, aworkfeeding means 1ncludingfa rotatable feeding mechanism, a

work holder for receiving assembled plies of, material, said work holderbeing movable into out of relation with said work feed ing means toposition the assembly on the rotatable feeding mechanism, a pressureplate movable nto'and out of engagement I with the mnltiply assembly forholding the plies of material together and in engagement with therotatable feeding mechanism,

a thread tensioning means and a wedge connected to the pressure platefor movement therewith for releasing the thread tension ingmeans whensaidpressureplate is moved out of engagement with the assembly.

1 8.111 a machine for sewing circular mulany articles, a work feedingmeans including a rotatable feding mechanism, a turns table havingajplurality of work holding ele n n ts each adapted for receivingassembled plies of material and each movable by turntable rotation a topOSfilOIl the. assembly in relation to the work feeding means and on.said rotatable feeding mechanisima pressure plate movable intoand outof engagement with the'so positioned assembly for holding the-plies ofmaterial together and in engagementwith the rotatabl'effefedingmechanism,a thread tensioning means and means for releasing the threadtensioning means operated-by movement of the pres mosses sure plate outof engagementwith the work assmbly, f i

1 9. In a machine for sewing circular multi-ply articles, a workfeedingmeansincluding a rotatable feeding mechanism, a turntable having a,pluralityoffwork holding with the so-positioned assembly for-hold.

ing the plies of material together and in en gagement with therotatable. feed ng mechanism, a thread tens1on1ng means and automaticmeans for moving the pressure plate out of engagement with: the workassembly and for simultaneously releasing the thread tensioning means. 7p

2O. A machine comprisinga work feeding means, a work holder forreceiving the work, said work holder being movable into and out ofrelation with said work feeding means to position. the work withrelation thereto, a pressure and guide means cooperating with said workfeeding means and movable into and out of engagement with the workassembly, a threadtcnsioning means and means for releasing the'threadtensioningmeans when said pressure and guide means is moved out ofengagement with the work.

21. A machine comprising, a workfeeding means, a turntable havingaplurality of Work holding elements each adapted forreceiving thematerial to be operated upon and each the material in relation to thework feeding means, a pressure and guide means movable into and out ofengagement with'the work, a thread tensioning means an d meansv forreleasing the thread tensioning means operated by movement of thepressure and guidemeans outof engagement with the work.

22. A sewing machine'cbmprising a work feeding means, a turntable havinga plurality of work holding elem'entseach adapted vfor receivingassembled plies of material and each movable by turntable rotation toposi-' tion the assembly in relation to the work feed ing means, apressure and guide means movable into and out of engagement with the sopositioned assemblyffor guiding the plies of material together, a threadtensioning means and meansautomatically operable for moving the pressureand guide means outof engagement with the, Work and for simultaneouslyreleasing the thread tensioning m sf Y i p 23, Ina'mahine forsewingmulti-ply articles',fa sewing machine head,,a work feedingmechanism including a rotatable table and a rotatable pressureplatebetween which the movable by turntable rotation to position nism inrelation to the sewing needle for stitching together the rims of themulti-ply assembly, and means for automaticallyelevating the pressureplate to thereby release the work when a predetermined part of the workassembly has been stitched, said last-mentioned means comprising apressure plate lifting bar slidable in said head, a lever connected tosaid liftin bar and ivoted on said head and cam means normall'ClGJI'GSSlIl the 7 l b pressure plate through the lever, but so shapedas to release the pressure plate at the desiredtime. i

24. In a machine of the class described, a

mechanism comprising an intermittently oprotating shaft, a clutch meansconnected to' the work feeding device, a rocker arm for operating theclutch means to eifect intermittent operation of the work feedingdevice, and a universally movable rod connecting the rocker arm withsaid continuously rotating shaft, said rod being adjustable on saidrocker arm to adjust the throw of said clutch and hence the size of thestitch;

26. In a machine of the class described, a mechanism compr sing anintermittently operable work feeding device, a continuously rotatingshaft, a clutch means connected to the work feeding device, said clutchmeans provided with clutch gripping dogs, a rocker armzfor oscillatingthe gripping dogs to ef fect intermittent operation of the work feedingdevice, and a universally movable rod connecting the rocker arm withsaid continuously rotating shaft. 1 i

27. In a machine of the class described, a mechanism comprising anintermittently 0perable work feeding device,a continuously rotatingshaft, a clutch means connected to the work feeding device, a rocker armfor operating the clutch means to effect intermittent operation of thework feeding device, a universally movable rod connected to the rockerarm, and a ball eccentric connecting the rod with the continuouslyrotating shaft.

28. In a machine of the class described, 'a mechanism comprising anintermittently operable work feeding device, a continuously rotatingshaft, a clutch means connected to the work feeding device, a rocker armfor operating the clutch means to effect intermittent operation of thework feeding device, a universally movable rod connected to the rockerarm, and a ball eccentric connecting the rod. with the continuouslyrotating shaft,

said rod being'adjustable on said rockerarm to adjust the throw ofsaid'clutch andhence the sizelof. the stitch, r

29. A machine for sewing multi-ply articles comprising, stitchmechanism, work feeding mechanismincluding 'a rotatable table-landrotatable pressure plate between which the plies of the work assemblyareheld, a reciprocable pressure bar carrying said pressure plate, acontrol cam, operating mechanism for actuating the ;stitch mechanism,the :work feeding mechanism, and the control cam, a treadle. fordepressing the pressure plate, a follower cooperating with theaforesaidcam forkeeping the pressure'plate in operative position, andmeans for automatically re leasing the work whenfa predetermined partof; th'erim of the work assembly'has been pitchedaincluding mating meansonsaid cam and follower for releasing the-pressure plate. x

: 30. A machine for sewing multi-plyarticles; comprising stitchmechanism, workfeeding 'mechanisnr including a rotatable table and arotatable PIBSSUI'B IPlatG between which the plies of the workassemblyare held, a re ciprocable pressure bar carr'ylng said pres--sure plate, a control cam, operating mechanism for. actuating the stitchmechanism, the

work feeding mechanism, and the control cam, a treadle for positivelydepresslng the pressureplate, latch means for holding'ithe pressureplate in operative .po'sitionf-anol meansfor automatically releasing thework i when'a predetermined part of the rim of the work assembly hasbeen stitched includ j ing trip means on the aforesaid control cam forreleasing the latch-means. 1 1

31.. A machine "for sewing multi-p'ly ar-' 'ticles comprising stitchmechanism, work feeding mechanism including. a rotatable table and arotatable pressure plateibetween which the plies of the work assembly"are held, a reciprocable pressure baricarrying' said pressure plate, acontrol cam, operating mechanism for actuating the stitch mechanism, theworkfeeding mechanism, andi-the control cam, a source of power, treadlemeans for starting. the machine including '1'15 means to connect thepower source and 0peratlng mechanism and to depress thepressure plate, afollower cooperatlng w1th the aforesaid cam for keeping the pressureplate in operative position,and means for automatically stoppingthe'machine when a pre determined part of the rim of the workassemblyhas been stitched includingftrip means on the aforesaidcontrolca'm fordisconnecting the power source, and mating means'on sa d cam andfollower for releasing the pressure plate.

32. A machine for sewing multi-ply articles comprising stitch mechanism,work feeding mechanism including a' rotatable t b e. and a'rotatablpressure plate between 1O 1 p v- 1,808,805

whichthe plies of the work assembly are held, a reciprocable pressurebar carrying said pressure plate, acontrol cam,'0perating mechanism foractuating the stitch mech- 'ianism, the work feeding mechanism,and thecontrol cam, a drive belt, treadle operated means for starting themachine, including meansto shift the belt and to depressthe pressureplate, means to maintain the machine in operation including latch meansfor holding the belt shifting means and pres- 7 sure plate in operativeposition, and means for automatically stopping the machine when apredetermined partof the rim of the work assembly has been stitchedincluding trip means on the aforesaid controlcam for releasing the latchmeans.

'33. A machine for sewlng multiaply articles com-prising stitchmechanism, 'work' v feeding -mechanism including a rotatable table and arotatable pressure plate between which the plies of the work assemblyare held,

a 'reciprocable pressure bar carrying said pressure plate,a control cam,operating mech- 2 anis'm for actuating the stitch mechanism, the Workfeeding mechanism, and the control cam, a drive belt, treadle operatedmeans for 7 starting the machine including means to shift the belt andto depress the pressure plate,

means to maintain the machine in operation including latch means forholding thebelt shifting 'means and'pressure plate in operativeposition,and a follower cooperating with theaforesaid camforkeeping the pres 5sure plate under desired pressure, and means 1 for automaticallystopping the 'machine when a predetermined part of the rimof theworkassembly has been stitchedinclud ing trip means on the aforesaidcontrol cam I for releasing'th'e latch means, andmating means on saidcam and follower forreleasing thepressure plate.

'7 Signed at College Point, New York in the county of Queens and Stateof New York this I seventh day of August, A. D, 1926.

ROGER BIHLER.

